carry permit, to keep a gun at the school. now, you can control that, limit who it applies to, we can make it optional, don't have to require it, but at least the killers and by the way, the killers, as crazy as they may be, me lick lousely plan these operations. they know everything about the area they're about to commit mayhem in. maybe at least the killer would understand there's a chance someone at the school or shopping mall would have a gun and might be able to stop them. >> ezra kline writes in his column this morning that the killer's mother had access to guns, he was a gun enthusiast, he was trained to use guns, that didn't help her though. >> no. and she obviously did not lock the weapons up as someone should have locked them up. the one thing that i think you have a responsibility to do is if you own guns, keep them locked up. always keep them locked up. not just because of children but because of what, cow know, people who break into the house could do with them.